General uses
* Trevelyan baronets * Trevelyan College, Durham, England * ''Trevelyan'', an 1833 novel by Caroline Lucy ScottPeople with the surname
* Anne-Marie Trevelyan (born 1969), British Conservative Party politician, Member of Parliament (MP) for Berwick upon Tweed since 2015 * Sir Charles Trevelyan, 1st Baronet (1807–1886), British civil servant * Sir Charles Trevelyan, 3rd Baronet (1870–1958), British Member of Parliament * Francis Trevelyan Buckland (1826–1880), English surgeon, zoologist, popular author and natural historian * G. M. Trevelyan, George Macaulay Trevelyan (1876–1962), British historian and university administrator * Sir George Trevelyan, 2nd Baronet (1838–1928), British statesman and historian, as George Otto Trevelyan * Sir George Trevelyan, 4th Baronet (1906–1996), British new age spiritualist * Humphrey Trevelyan, Baron Trevelyan (1905–1985), British diplomat and author * John Trevelyan (disambiguation) * Julian Trevelyan (1910–1988), English artist and poet * Julian Trevelyan (pianist) (born 1998), British concert pianist * Laura Trevelyan (born 1968), BBC journalist * Mary Caroline Moorman (1905 - 1994) née Trevelyan, English historian * R. C. Trevelyan (1872–1951), English poet and translator * Raleigh Trevelyan (1923–2014), British author, editor and publisher * Robert Trevelyan (cricketer) (born 1970), English former first-class cricketer * Walter Trevelyan (1821–1894), English first-class cricketer and barristerCharacters
* Alec Trevelyan, a character in the James Bond movie ''GoldenEye'' * Dr. Francis Trevelyan, a character in ''The Spy with a Cold Nose'' * Dr. Trevelyan, a character in "The Adventure of the Resident Patient" by Arthur Conan Doyle * Captain Trevelyan, a character in ''The Sittaford Mystery'' by Agatha Christie * Louis Trevelyan, a character in ''He Knew He Was Right'' by Anthony Trollope * Christian Trevelyan Grey, a character in ''Fifty Shades of Grey'' by EL James * Kurt Trevelyan, a character in ''Halo: Ghosts of Onyx'' by Eric Nylund * Trevelyan, a character who escaped the inundation of the sea when Lyonesse was engulfed * Inquisitor Trevelyan, a potential player character in ''Dragon Age: Inquisition'' * Colley Trevelyan, a character in "Sparrows in the Scullery" by Barbara Brooks Wallace * Armand Trevelyan, a character in Isaac Asimov's novella "Profession (novella), Profession" * Maxim Trevelyan, character in ''The Mister'' by E. L. James.People with the forename
*Trevelyan Richards, coxswain of the RNLI lifeboat during the Penlee lifeboat disasterOther
* Trevelyan's char (''Salvelinus colii'') a cold-water fishSee also
*Louise Trevillyan *Trevelin {{disambiguation, surname Cornish-language surnames Welsh-language surnames